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Added test, fixed typo

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This commit is contained in:
Conr86
2019-06-22 17:15:44 +10:00
parent 75457cdad8
commit e7cb94e364
3 changed files with 63 additions and 49 deletions
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16
sgp30/crc.py
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@@ -1,23 +1,23 @@
class Crc8:
def __init__(s):
s.crc=255
s.crc = 255
def hash(s,int_list):
def hash(s, int_list):
for i in int_list:
s.addVal(i)
return s.crc
def addVal(s,n):
def addVal(s, n):
crc = s.crc
for bit in range(0,8):
if ( n ^ crc ) & 0x80:
crc = ( crc << 1 ) ^ 0x31
for bit in range(0, 8):
if (n ^ crc) & 0x80:
crc = (crc << 1) ^ 0x31
else:
crc = ( crc << 1 )
crc = (crc << 1)
n = n << 1
s.crc = crc & 0xFF
return s.crc
#print(Crc8().hash([1,144]))
# print(Crc8().hash([1,144]))
#print(hex(Crc8().hash([0xBE, 0xEF])))
#[1, 144, 76, 0, 6, 39]